wm8952 Wolfson Microelectronics plc, wm8952 Datasheet - Page 61

• Manufacturer Part Number: wm8952
• Description: Mono Adc With Microphone Pre-amplifier
• Manufacturer: Wolfson Microelectronics plc

Pre Production
w
33 (21h)
34 (22h)
35 (23h)
36 (24h)
37 (25h)
38 (26h)
REGISTER
ADDRESS
9
8
7:6
5:3
2:0
15:8
7:4
3:0
15:9
8
7:4
3:0
15:4
3
2:0
15:8
7
6
5:4
3:0
15:6
5:0
15:9
8:0
BIT
ALCSEL
ALCMAX
ALCMIN
ALCHLD
ALCLVL
ALCMODE
ALCDCY
ALCATK
NGEN
NGTH
PLL_POWERD
OWN
FRACEN
PLLPRESCALE 00
PLLN[3:0]
PLLK[23:18]
PLLK[17:9]
LABEL
111
000
000
1011
0011
0010
0
000
0
1
1100
001100
00h
010010011
0
0
00
000h
00h
0
000h
00h
000h
DEFAULT
Reserved
ALC function select
0=ALC disabled
1=ALC enabled
Reserved
Set Maximum Gain of PGA
Set minimum gain of PGA
Reserved
ALC hold time before gain is increased.
ALC threshold level. Sets the desired signal level.
Reserved
Determines the ALC mode of operation:
0=Normal mode
1=Limiter mode.
Decay (gain ramp-up) time
ALC attack (gain ramp-down) time
Reserved
Noise gate function enable
1 = enable
0 = disable
Noise gate threshold
Reserved
PLL POWER
0=On
1=Off
Fractional Divide within the PLL
0=Disabled (Lower Power)
1=Enabled
00 = MCLK input multiplied by 2 (default)
01 = MCLK input not divided
10 = Divide MCLK by 2 before input to PLL
11 = Divide MCLK by 4 before input to PLL
Integer (N) part of PLL input/output frequency ratio.
Use values greater than 5 and less than 13.
Reserved
Fractional (K) part of PLL1 input/output frequency ratio
(treat as one 24-digit binary number).
Reserved
Fractional (K) part of PLL1 input/output frequency ratio
(treat as one 24-digit binary number).
DESCRIPTION
PP, Rev 3.0, December 2008
Input Limiter /
Automatic Level
Control (ALC)
Input Limiter /
Automatic Level
Control (ALC)
Input Limiter /
Automatic Level
Control (ALC)
Input Limiter /
Automatic Level
Control (ALC)
Input Limiter /
Automatic Level
Control (ALC)
Input Limiter /
Automatic Level
Control (ALC)
Input Limiter /
Automatic Level
Control (ALC)
Input Limiter /
Automatic Level
Control (ALC)
Input Limiter /
Automatic Level
Control (ALC)
Input Limiter /
Automatic Level
Control (ALC)
Master Clock and
Phase Locked
Loop (PLL)
Master Clock and
Phase Locked
Loop (PLL)
Master Clock and
Phase Locked
Loop (PLL)
Master Clock and
Phase Locked
Loop (PLL)
Master Clock and
Phase Locked
Loop (PLL)
Master Clock and
Phase Locked
Loop (PLL)
REFER TO
WM8952
61